The Duchess of Cambridge has many different roles, but her most important one to date is being a mum! Kensington Palace has confirmed that Kate is currently expecting her third child with Princess William, so to celebrate take a look back at some of her best mummy moments!

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Kate moved Prince George's hair to the side as the family made their way from the plane in Berlin during their second country on their royal tour in July 2017. Photo: Getty Images

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As a sleepy George stuck by his father, Princess Charlotte had a helping hand from her mum as she exited the aircraft. Photo: Getty Images

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After the flight from London to Warsaw, Kate held on to her adorable daughter and gave her a smile as they exited the private plane. Photo: Getty Images

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The Duchess kept her eye on her kids during the 2017 Trooping the Colour. At one point, she brushed the hair from Prince George's face so he could better see the crowd below. Photo: Getty Images

For her sister Pippa's wedding on May 20, 2017, the Duchess of Cambridge had a very important role of keeping the pageboys and flower girls including George and Charlotte in line. Kate at one point was seen showing Charlotte what to do prior to walking down the aisle. Photo: WireImage

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As guests made their way out of the ceremony, Kate held on to two-year-old Charlotte's hand as she patted George's head. Ahead of the wedding, Kate told guests at their garden party that she really hoped her children would behave. Photo: WireImage

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Kate held on to Princess Charlotte and walked close to William and son Prince George during the Christmas Day service in 2016. Photo: Danny Martindale/WireImage

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Kate held on to her little lady as they prepared to make their grand exit from Canada during their royal tour of the country in 2016. Photo: Karwai Tang/WireImage

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Kate was by her daughter's side for Princess Charlotte's first royal engagement during the 2016 family tour of Canada. Photo: Chris Jackson / PA Wire/Press Association Images

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The Duchess looked surprised as her young son blew bubbles at her and Prince William with his orange bubble gun in Canada. Photo: Chris Jackson / PA Wire/Press Association Images

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Kate held on to Charlotte as the royal family watched an entertainer blow a balloon for Prince George. Photo: Chris Jackson / PA Wire/Press Association Images

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Prince William's wife laughed as George played with his mum and an animal balloon. Photo: Chris Jackson / PA Wire/Press Association Images

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The Duchess of Cambridge beamed as she watched her little girl play with a musical instrument at a party held for military families. Photo: Chris Jackson / PA Wire/Press Association Images

Kate played with George and his balloon, placing it on his head, at a children's party during their royal tour of Canada. Photo: Chris Jackson / PA Wire/Press Association Images

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Kate held 16-month-old Princess Charlotte tight as they made their way down the plane in Victoria, Canada for their eight day royal tour. Photo: WireImage

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The doting mum made sure her three-year-old son Prince George was alright as they greeted the waiting crowd after touching down in Canada. Photo: Getty Images

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Prince George carried out his first engagement in the UK, attending the 2016 Royal International Air Tattoo with his parents. The royal tot met pilots and hopped into aircrafts alongside his mum and dad, who kept a close eye on their excited son.
Photo: Getty Images

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Upon his arrival to the RAF Fairford, George was initially overwhelmed by his surroundings. Thankfully the Duchess was there to scoop her little boy up and give him a reassuring cuddle.
Photo: Getty Images

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The stylish royal brushed her son's hair as he shyly greeted a pilot on the tarmac.
Photo: Getty Images

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While out inspecting aircrafts, the adorable Prince asked Kate, "Mummy, can I fly the Red Arrow now?" Though William gently told him, "Not right now."
Photo: Getty Images

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Cambridges party of four! Princess Charlotte made her balcony debut in the arms of her stylish mother Kate and alongside her big brother Prince George and dad Prince William during the 2016 Trooping the Colour. The mum-of-two beamed showing off her children to the public.
Photo: Ben A. Pruchnie/Getty Images

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The Duchess directed her young children's attention as the royal family gathered on the balcony of Buckingham Palace to watch the Royal Air Force flyover.
Photo: Samir Hussein/WireImage

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Amidst the festivities, Kate sweetly planted a kiss on Princess Charlotte's head as she held her daughter close during the Trooping the Colour.
Photo: Danny Martindale/WireImage

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Kate brushed her son's golden locks into place as George excitedly looked on at the action beyond the palace gates. Following the day's festivities, the royal revealed, "I've honestly never seen him so excited. His face lit up."
Photo: Max Mumby/Indigo/Getty Images

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Kate and George attentively looked on from the palace balcony, while teething Charlotte snacked on her fingers.
Photo: Karwai Tang/WireImage

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Look mum! Kate kneeled next to Prince George as he pointed out to something in the horizon from the balcony of Buckingham Palace.
PhotoL Danny Martindale/WireImage